Alternate Test Names:
inositol polyphosphate 4-phosatase type II
INPP4B encodes the inositol polyphosphate 4-phosatase type II, one of the enzymes involved in phosphatidylinositol signaling pathways.
This antibody is useful as a diagnostic aid for basal like breast carcinomas, as the absence of expression of INPP4B, has been shown in our hands to have a 90% sensitivity and 80% specificity for basal-like breast carcinomas, which closely reflects the reported literature.
INPP4B will be run in a panel with other antibodies used in the diagnosis of basal-like breast carcinomas, such as, Nestin, Keratin 5, and c-kit.
Subcellular Localization: membranous and cytoplasmic
Disease State: Breast Cancer
CPT Code(s): 88360
Turnaround Time: Within 1-2 business days of receipt
Schedule: Monday - Friday
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR -
• 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm